Protection of passive optical network by using ring topology

Lafata, Pavel

doi:10.1109/tsp.2012.6256262

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Figure 1 shows the OMAN’s dual-fiber ring construction. The metro access network consists of one or two central offices and M RNs [ 9 , 15 , 16 , 29 , 30 ], with a ring feeder fiber design. When building an OMAN, redundant fibers are buried [ 14 ].…”

Section: Architecture Of the Proposed Optical Metro Access Networkmentioning

confidence: 99%

“…X. Li et al deployed a dual fiber ring structure for protection measurements and multiple transmitters at the optical line terminal side (OLT) [ 15 ]. Similarly, a ring-based OMAN network is deployed with two OLTs in [ 16 ] for protection purposes.…”

Section: Introductionmentioning

confidence: 99%

“…In the OMAN, in a core network, a ring architecture is an ideal topology for connecting different nodes, and an OLT is the main source for data handling/transmission to the ONUs. Therefore, for a ring-based architecture, two or more OLTs are tested in case a fiber failure occurs in the core network [ 16 ]. Hence, deploying more OLTs increases network costs.…”

Section: Introductionmentioning

confidence: 99%

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A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

Ullah,

Almadhor

et al. 2024

Sensors

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This study proposes and presents a new central office (CO) for the optical metro access network (OMAN) with an affordable and distinctive switching system. The CO’s foundation is built upon a novel optical multicarrier (OMC) generation technique. This technique provides numerous frequency carriers that are characterized by a high tone-to-noise ratio (TNR) of 40 dB and minimal amplitude excursions. The purpose is to accommodate multiple users at the optical network unit side in the optical metropolitan area network (OMAN). The OMC generation is achieved through a cascaded configuration involving a single phase and two Mach Zehnder modulators without incorporating optical or electrical amplifiers or filters. The proposed OMC is installed in the CO of the OMAN to support the 1.2 Tbps downlink and 600 Gbps uplink transmission, with practical bit error rate (BER) ranges from 10−3 to 10−13 for the downlink and 10−6 to 10−14 for the uplink transmission. Furthermore, in the OMAN’s context, optical fiber failure is a main issue. Therefore, we have proposed a possible solution for ensuring uninterrupted communication without any disturbance in various scenarios of main optical fiber failures. This demonstrates how this novel CO can rapidly recover transmission failures through robust switching a and centralized OLT. The proposed system is intended to provide users with a reliable and affordable service while maintaining high-quality transmission rates.

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Section: Architecture Of the Proposed Optical Metro Access Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

Ullah,

Almadhor

et al. 2024

Sensors

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Feeder fiber and OLT protection for ring-and-spur long-reach passive optical network

Abbas

Gregory

2013

2013 Australasian Telecommunication Networks and Applications Conference (ATNAC)

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Passive Optical Network Survivability: Protection, Detection and Restoration

Abbas

Gregory

2015

IJICTA

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Passive optical network (PON) technologies have received increasing attention as demand for fibre access networks has grown. Enhancing fibre access network reliability provides lower operational costs, and improves customer satisfaction. This paper discusses PON survivability including protection schemes for the fiber link and the Optical Line Terminal (OLT), the exciting monitoring techniques of the fiber link, and the effect of reducing the restoration time on the network availability. The main contribution of this study is to provide two protection schemes namely OLT-only-protected and OLT-and-ring protected. The proposed schemes are designed to handle instances of single failure affecting all customers in the network. This work considers three key performance metrics- Failure Impact Robustness (FIR), cost, and availability. The objective of the proposed protection architectures is to guarantee high quality of service at low costs by protecting critical network elements such as OLT and fiber ring. The proposed architectures have been compared with other well-known protection schemes. The results postulate that OLT-and-ring protected approach has 99.993% availability with a 0.09% increase in cost compared to the ring-only protection architecture.

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Protection of passive optical network by using ring topology

Cited by 3 publications

References 6 publications

A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

Feeder fiber and OLT protection for ring-and-spur long-reach passive optical network

Passive Optical Network Survivability: Protection, Detection and Restoration

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